/* ============================================================
   TILLFORGE — WORK / PORTFOLIO PAGE
   ============================================================ */

/* ---- FILTER BAR ------------------------------------------ */

.filter-bar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--sp-2);
  margin-bottom: var(--sp-12);
  padding: var(--sp-3);
  background: var(--clr-surface-2);
  border: var(--border-subtle);
  border-radius: var(--radius-xl);
  width: fit-content;
}

.filter-btn {
  font-family: var(--font-mono);
  font-size: var(--type-xs);
  font-weight: 500;
  letter-spacing: 0.06em;
  padding: 0.45rem 1rem;
  border-radius: var(--radius-full);
  border: 1px solid transparent;
  color: var(--clr-white-dim);
  background: transparent;
  cursor: pointer;
  transition:
    background var(--dur-fast) var(--ease-out),
    color var(--dur-fast) var(--ease-out),
    border-color var(--dur-fast) var(--ease-out);
  white-space: nowrap;
}

.filter-btn:hover {
  color: var(--clr-white);
  background: rgba(255, 255, 255, 0.06);
}

.filter-btn.is-active {
  background: var(--clr-red);
  color: var(--clr-bg);
  border-color: var(--clr-red);
  font-weight: 700;
}

/* ---- PORTFOLIO GRID --------------------------------------- */

.portfolio-section {
  padding-block: var(--section-gap);
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-6);
}

/* First card spans full width */
.portfolio-grid .portfolio-card:first-child {
  grid-column: 1 / -1;
}

/* ---- PORTFOLIO CARD -------------------------------------- */

.portfolio-card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--clr-surface-2);
  border: var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  transition:
    border-color var(--dur-base) var(--ease-out),
    transform var(--dur-base) var(--ease-out),
    box-shadow var(--dur-base) var(--ease-out);
}

.portfolio-card:hover {
  border-color: rgba(233, 69, 96, 0.3);
  transform: translateY(-4px);
  box-shadow: var(--shadow-red), var(--shadow-md);
}

/* Featured card gets bigger thumbnail */
.portfolio-card--featured .portfolio-card__thumb {
  aspect-ratio: 21 / 9;
}

.portfolio-card__thumb {
  position: relative;
  aspect-ratio: 16 / 9;
  background: var(--clr-surface);
  overflow: hidden;
}

.portfolio-card__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--dur-slow) var(--ease-out);
}

.portfolio-card:hover .portfolio-card__thumb img {
  transform: scale(1.04);
}

/* Placeholder when no screenshot yet */
.portfolio-card__thumb-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--clr-surface-2) 0%, var(--clr-surface) 100%);
  position: relative;
  overflow: hidden;
}

/* Decorative grid lines on placeholder */
.portfolio-card__thumb-placeholder::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(233, 69, 96, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(233, 69, 96, 0.04) 1px, transparent 1px);
  background-size: 40px 40px;
}

.portfolio-card__thumb-placeholder-inner {
  position: relative;
  z-index: 1;
  text-align: center;
}

.portfolio-card__thumb-placeholder-icon {
  font-size: 2.5rem;
  display: block;
  margin-bottom: var(--sp-3);
  opacity: 0.5;
}

.portfolio-card__thumb-placeholder-label {
  font-family: var(--font-mono);
  font-size: var(--type-xs);
  color: var(--clr-slate-light);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* Colour bar at top of each card */
.portfolio-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--clr-red), var(--clr-amber));
  opacity: 0;
  transition: opacity var(--dur-base);
  z-index: 1;
}
.portfolio-card:hover::before { opacity: 1; }

/* Live badge overlay */
.portfolio-card__live-badge {
  position: absolute;
  top: var(--sp-4);
  right: var(--sp-4);
  z-index: 2;
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  background: rgba(13, 13, 13, 0.85);
  border: var(--border-red);
  border-radius: var(--radius-full);
  padding: 0.25rem 0.65rem;
  font-family: var(--font-mono);
  font-size: var(--type-xs);
  color: var(--clr-red);
  backdrop-filter: blur(6px);
}

.portfolio-card__live-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--clr-red);
  animation: livePulse 2s ease-in-out infinite;
}

@keyframes livePulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.5; transform: scale(0.8); }
}

/* ---- CARD BODY ------------------------------------------- */

.portfolio-card__body {
  padding: var(--sp-6);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.portfolio-card__type {
  font-family: var(--font-mono);
  font-size: var(--type-xs);
  color: var(--clr-red);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: var(--sp-3);
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}

.portfolio-card__type::before {
  content: '';
  display: block;
  width: 14px;
  height: 1px;
  background: var(--clr-red);
  opacity: 0.5;
}

.portfolio-card__title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--clr-white);
  margin-bottom: var(--sp-3);
  line-height: var(--leading-snug);
  transition: color var(--dur-fast);
}

.portfolio-card:hover .portfolio-card__title { color: var(--clr-red); }

.portfolio-card__desc {
  font-size: var(--type-sm);
  color: var(--clr-white-dim);
  line-height: var(--leading-body);
  flex: 1;
  margin-bottom: var(--sp-5);
  max-width: 100%;
}

.portfolio-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--sp-4);
  border-top: var(--border-subtle);
}

.portfolio-card__year {
  font-family: var(--font-mono);
  font-size: var(--type-xs);
  color: var(--clr-slate-light);
}

.portfolio-card__cta {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: var(--type-sm);
  font-weight: 600;
  color: var(--clr-red);
  transition: gap var(--dur-fast);
}
.portfolio-card:hover .portfolio-card__cta { gap: var(--sp-3); }

/* Tags row */
.portfolio-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  margin-bottom: var(--sp-4);
}

.portfolio-tag {
  font-family: var(--font-mono);
  font-size: var(--type-xs);
  color: var(--clr-slate-light);
  background: rgba(255,255,255,0.04);
  border: var(--border-subtle);
  border-radius: var(--radius-full);
  padding: 0.2rem 0.55rem;
}

/* Empty state */
.portfolio-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: var(--sp-20);
  color: var(--clr-slate-light);
  font-family: var(--font-mono);
  font-size: var(--type-sm);
  display: none;
}
.portfolio-empty.is-visible { display: block; }

/* ---- RESPONSIVE ------------------------------------------ */

@media (max-width: 900px) {
  .portfolio-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .portfolio-grid .portfolio-card:first-child {
    grid-column: 1 / -1;
  }
}

@media (max-width: 600px) {
  .portfolio-grid { grid-template-columns: 1fr; }
  .filter-bar { width: 100%; }
  .filter-btn  { flex: 1; text-align: center; }
}